This is dependent on the level of fine dining and the locale. A high-end restaurant in an affluent, high density area like LA or NYC can support very high price

This is dependent on the level of fine dining and the locale. A high-end restaurant in an affluent, high density area like LA or NYC can support very high prices while still keeping packed day in day out. And that leads to a lot of money coming in (five figures a day easily). Which is why, incidentally, there tend to be more such restaurants in such places.